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2002 toyota sequoia ac light blinking

Had ac check done at Pep Boys. They said no power to compressor. Could this be from a relay going out? If so should the ac compressor control relay and the mg clt both be changed or just one?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

jagjeffery
  • 316 Answers

SOURCE: 2003 Toyota corolla A/C compressor not coming on fuse good, A/C charged, no pwer at compressor

it is located in the engine compartment fuse / junction box it is on the drivers side then cover to the box will show you witch one it is ( the relay will be white in color)

Posted on May 30, 2009

  • 1 Answer

SOURCE: 1991 Sierra GMC AC control problem

The follwing is a cut and paste from a service bulletin:

Bulletin No.: 461202

Date: May, 1994

SUBJECT:
A/C CONTROL HEAD FLASHES OR ERRATIC OPERATION OF A/C CONTROLS (POLISH
TERMINALS)

MODELS:
1988-94 CHEVROLET AND GMC TRUCK C/K MODELS
1990-94 CHEVROLET AND GMC TRUCK TOPKICK/KODIAK MODELS WITH C60 OR C69 AIR
CONDITIONING

CONDITION:

A/C Control Head flashes, performs erratically or malfunctions.

CAUSE:

Light surface corrosion on the Control Head terminals.

CORRECTION:

Remove the A/C Control Head and while holding the unit with the terminal
cavity down (toward the floor) so no particles will fall inside on the
circuit boards, polish the terminals on both sides of the cavity with a lead
pencil pink eraser. Do not use an ink eraser or other abrasive such as a
small wire brush or sandpaper, etc. Doing so will remove the terminal
coating and degrade the contact surface.

Performing this procedure, in many cases, will make replacing the Control
Head unnecessary. Using this procedure in conjunction with the A/C circuit
diagnosis found in the Electrical Diagnosis Manual and especially before
replacing a Control Head for any reason is recommended.

After polishing the Control Head terminals, but before reconnecting, check
for proper terminal contact as described in the applicable electrical
diagnosis manual. If contact is good, apply dielectric grease (P/N 12345579)
to the harness connector terminals. Please do not apply grease to the
Control Head.

Posted on Jun 30, 2009

  • 1 Answer

SOURCE: I have relay saying :mg clt what is that mean?

It is the Magmetic clutch relay for your A/C - if your AC light is blinking and you have no AC change this relay - common problem in this model - to test the relay switch it with one of the other relays next to it and try the AC (the relays are ina black box on the drivers side under the hood behind the battery)

Posted on May 03, 2010

  • 42 Answers

SOURCE: The ac light on my Toyota Sequoia just started

replace the A/C magnetic clutch relay, its in the under the hood fuse box

Posted on May 05, 2010

  • 14036 Answers

SOURCE: have no power to the ac compressor. all fuses and

SOUND LIKE AC COMPRESSOR CLUTCH COIL IS OPEN.ITS GETTING POWER YOU HAVE A OPEN COIL CIRCUIT.

Posted on May 27, 2010

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1 Answer

2002 toyota sequoia ac light blinking


You would need the shop manual to get the wiring diagrams to trace the circuit. I'm surprised Pep Boys did not go ahead and do the work.
You have to back-track from the compressor clutch to find out where the power is stopping and why.

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There are a variety of reasons. If there is a slow leak on your AC lines, once the pressure falls below a certain value, the compressor cut-off switch will no longer allow it to come on. Many times when a car stops blowing cold air, it has to do with either the AC compressor or a leak in the lines, though there are other possibilities.

If you take your car down to a Pep Boys, you can ask for a free AC check and they will check the pressure on your lines. If there is appropriate pressure, then you can tell generally that it is a component of your AC system, most likely the compressor. If there is no pressure, you can have them refill the freon, but bear in mind that it will eventually leak out again unless you have them find the leak and fix it.

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1 Answer

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The Sequoia's A.C. is forever a problem,taking to the dealer and spending a few grand is just a temporary fix,and since it's not a driving issue,there is no recall,found a site where a heap of Sequoia owner's all have the same problem as your's,I bought A 2004 Tundra new and sold it a couple of years ago,only had 68,000 miles and had no A.C. issues,so it's only a Sequoia issue,I would sell it instead of sinking a bunch of money into it and it still be problematic.

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replace the A/C magnetic clutch relay, its in the under the hood fuse box

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My problem is with the AC on my 91 Civic Wagon. It suddenly became inop after an engine change. Wiring seems to be good along with relays. My problem is there is no ground on the clutch relay to actuate...


changing or swapping engine should have no effect on ac unit if you have everything plug back in correctly. I replace my engine also and plug everything back in with no problems. when you press the ac button does it light up? if not than you have no power to the switch and to clutch/compressor. take a meter tester to see if any power going to the compressor when the ac button is on position and also to the ac button. if not check your relay see if its good and test the plug where the relay plug in to see if any current flow though it. I suggest to pick up Chilton manual repair book from auto zone or pep boys for schematic.

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My 2002 doing the same thing. I replaced the clutch relay in the fuse box under the hood and everything worked perfect. The relay at Toyota cost me $75>

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